So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Mloston, G.; Celeda, M.; Linden, A.; Heimgartner, H. researched the compound: 1-(tert-Butyl)-1H-pyrrole-2,5-dione( cas:4144-22-3 ).Related Products of 4144-22-3.They published the article 《Polycyclic [2+3]-cycloadducts from the thermal decomposition of bis(2,5-dihydro-1,3,4-thiadiazoles) in the presence of N-methylmaleimide》 about this compound( cas:4144-22-3 ) in Polish Journal of Chemistry. Keywords: polycyclic cycloadduct thermal decomposition bis dihydro thiadiazole methylmaleimide; tetramethyl cyclobutane dithione cycloaddition maleimide; crystal mol structure dihydro thiadiazole cycloadduct methylmaleimide. We’ll tell you more about this compound (cas:4144-22-3).
Thermal decomposition of a mixture of the two stereoisomeric bis(2,5-dihydro-1,3,4-thiadiazoles) cis- and trans-2, which was prepared by treatment of 2,2,4,4-tetramethylcyclobutane-1,3-dithione with excess of diazomethane in the presence of two equivalent of N-methylmaleimide, led to a mixture of three 1:2 cycloadducts. The structures of these thiocarbonyl methanide-adducts have been established by x-ray crystallog. In the presence of only one equivalent of N-methylmaleimide, a complex mixture of the three 1:2 adducts, the known cis- and trans- dispirocyclic bis-thiiranes, and 1:1 adduct, containing one thiirane ring and one fragment resulting from a [2+3]-cycloaddition of a thiocarbonyl methanide, was formed. The structure of the latter has again been proven by x-ray crystallog.
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Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics